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Finding the Third Proportional to 69,338 and 135,220

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Solution

The third proportional to 69,338 and 135,220 is: 263,700.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,338 : 135,220 = 135,220 : x
  2. Step 2: Convert to fraction form
    69,338/135,220 = 135,220/x
  3. Step 3: Cross multiply
    69,338x = 135,220 × 135,220
  4. Step 4: Simplify right side
    69,338x = 18,284,448,400
  5. Step 5: Solve for x
    x = 18,284,448,400/69,338
  6. Step 6: Final answer
    x = 263,700.26

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.